反应详情

To a solution of (5R,6R,7R)-benzhydryl 7-((Z)-2-(((1-(tert-butoxy)-2-methyl-1-oxopropan-2-yl)oxy)imino)-2-(2-((tert-butoxycarbonyl)amino)-5-chlorothiazol-4-yl)acetamido)-3-(chloromethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 5-oxide (10.5 g, 11.50 mmol) in acetone (120 mL) was added sodium iodide (2.58 g, 17.24 mmol). The mixture was stirred at room temperature over 1.5 h. LCMS indicated completion of the reaction. The solid was filtered off, the filtrate was concentrated under vacuum, the residue was purified twice by CombiFlash Rf automated silica gel chromatography (120 g column), eluting with EtOAc/Hexanes (0-45%) to afford (5R,6R,7R)-benzhydryl 7-((Z)-2-(((1-(tert-butoxy)-2-methyl-1-oxopropan-2-yl)oxy)imino)-2-(2-((tert-butoxycarbonyl)amino)-5-chlorothiazol-4-yl)acetamido)-3-(iodomethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 5-oxide (7.5 g, 7.75 mmol, 67.4% yield) as a light brown foaming solid. LCMS: (M+H)+: 967.9.

1. customcompletion of the reaction
2. filtrationThe solid was filtered off
3. concentrationthe filtrate was concentrated under vacuum
4. customthe residue was purified twice by CombiFlash Rf automated silica gel chromatography (120 g column)
5. washeluting with EtOAc/Hexanes (0-45%)